Beta-Blockers and Exercise

Calcium channel blockers and beta-blockers versus beta-blockers alone for preventing exercise-induced arrhythmias in catecholaminergic polymorphic ventricular tachycardia.

BACKGROUND The mainstay of therapy for catecholaminergic polymorphic ventricular tachycardia (CPVT) is maximal doses of beta-blockers. However, although beta-blockers prevent exercise-induced ventricular tachycardia (VT), most patients continue to have ventricular ectopy during exercise, and some studies report high mortality rates despite beta-blockade. OBJECTIVE The purpose of this study wa...

Beta-blockers.

Beta-blockers and asthma.

In a single-blind, randomised, crossover study in 10 asthmatic patients, the effects of approximately equipotent oral doses of 3 cardioselective beta-blockers-atenolol (100 mg), metoprolol (100 mg), and acebutolol (300 mg)-and 4 non-cardioselective beta-blockers-proranolol (100 mg), oxprenolol (100 mg), pindolol (5 mg), and timolol (10 mg) upon FEV1 were compared. All drugs, except pindolol, pr...

Beta-blockers and diabetes mellitus

Thiazides, beta blockers and lipoproteins.

Some of the more important recent studies on the effect of thiazides and beta-adrenoceptor blocking agents is conflicting, possibly because of differences in patient compliance and in lipoprotein methodology and quality assurance between studies. It is likely that in the short-term, thiazide diuretics produce an increase in plasma triglyceride and cholesterol and in LDL-cholesterol. No consiste...